Overheating

2006 CHEVROLET COLORADO
200,567 MILES • 4 CYL • TURBO • 2WD • AUTOMATIC
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DAVID ATKINSON2
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  • 1 POST
My truck overheats and will shut off slightly after the halfway point on the temperature gauge. it will reach halfway within 10 minutes of running either idle or driving. I replaced the water pump, thermostat, flushed the radiator and checked sensors. It continues to overheat.
Jun 29, 2021 at 10:47 PM
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ASEMASTER6371
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  • 52,796 POSTS
Good morning,

I would have a leak-down test done to check and see if you have a failed head gasket. This would be the next step from what you have already done. The constant overheating may have damaged the head gaskets.

https://www.2carpros.com/articles/head-gasket-blown-test

This test is done by removing the spark plugs. Then add shop air into each cylinder one at a time and watch for any movement in the radiator coolant level.

https://www.2carpros.com/articles/how-to-change-spark-plugs

Roy
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Jun 30, 2021 at 2:27 AM